Oil burner



Dec. 14 1 926. 1 1,610,489

J. CARLISLE OIL BURNER Filed March 11. 1925 Patented Dec. 14-, 1926.

UNHTED STATES 1,610,489- rarsn'r orFicE.

JOSEPH CARLISLE, OF KANSAS CITY, MISSOURI, ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONE-SIXTEENTH T CLAUDE P. UTTER AND FIFTEEN-SIXTEENTHS T0 ELLA M. SCOTT, BOTH OF KANSAS CITY,

MISSQUBI.

OIL BURNER.

Application filed March 11, 1925. Serial No. 14,643.

This invention relates to liquid fuel burners and particularly to the well known oil burner of the overlying retort type which is so commonly used at the present time, and the primary object of this invention is the provision of an oil burner which will provide points of invention to overcome the many deficiencies of the burner now on the market. I

One of the objects of this invention is the provision of an oil burner which does not carbonize.

Another object of this invention is the provision of an oil burner which embodies the proper size of pipe used in the coil thereof with the proper relative size of jet.

A further object of the present invention is to provide an oil burner which has a mixing chamber of proper shape to cause the generated gas to mix with the proper quantity of air and at the proper time to produce a flame which burns with the highest degree of efficiency possible from the quality of oil used.

An even further object of the present invention is the provision of a novelly con- ;structed coil which has a series of abrupt turns therein for the purpose of slowing down the flow of oil andcausing the same to properly convert into a more eiiieient combustible gas.

it still further object of this invention is to provide a counter-sunk jet which is provided with roughened inner walls for the purpose of agitating the gas afterit passe upwardly through the jet in the bottom thereof.

This invention further contemplates the use of a gravity coil which does not have a supply of oil therein during the generate ing period and which consequently, shortens, the period of generat on to approximately two minutes. This particular construction of coil eliminates entirely the possibility of 'carbonization, since it is during the period of generation in most oil burners that the most carbon is formed.

A further object of this invention, and one of the most important features,gis the provision of a proper draft for the burner. This is accomplished through the partlcular construction of the mixing chamber and base.

In constructing this burner, care should be the drawing:

Figure 1 is a plan view of the oil burner showing in particular the novel and necessary shape of the coil.

Fig. 2 is a vertical central section through the burner taken on line 11-11 of Fig. 1.

Fig. 3 is a horizontal section of the burner taken on line III-HI of Fig. 2 and re- P duced in size; and,

Fig. 4 is a vertical central section of the preferred form of jet which should be used with this oil burner.

Referring at this time to the particular points of construction of the burner shown in the drawing, wherein similar reference characters refer to like parts throughout the several views, 5 is the base of the burner which is formed to provide a floor 6 having a flange 7 extending entirely there-around and which combines with floor 6 to furnish aflash pan used when generating the burner. The base 5 is preferably formed of metal and has its ends opento provide passage for air which may also pass beneath floor 6 through openings. 8 formed in each of the sides of base 5. Floor 6 is provided with a pair of draft openings 9 which should be near the center of the burner and have their oppositely disposed sides arcuate and concent ie with a jet 10 which is carried by one end of pipe 11 supported between 'draft openings '9. A pair of elbows 12 and 13 connected by pipe 14, join one end of vertical pipe 15 which extends upwardly from floor 6 at a point'near one end. This pipe 15 continues toform coil 16 as shown in Fig; 1 and is again turned down to form portion '17 which passes through floor 6 at the opposite end thereof and there joins through the intermediacy of elbow 18, the supply pipe 19 which leads from the tank of fuel oil not here shown.

The coil 16 must be formed with a series of abrupt turns or breaks 20 which slow down the flow of oil therethrough and gives it the proper time to crack and become a gas before passing through passages 15, 13, 1d, 12, 11 and jet 10. The supply pipe 19 should be approximately inch pipe and a needle valve, not here shown, should be used to govern the flow of oil. The pipe constituting the coil 16' and portions 15 and 17, should be approximately 26 inches in length from the point where it passes through floor 6 and should also be quarter inch stock. These relative sizes must be maintained to keep too much oil from entering the coils and cooling the same which causes improper combustion. These relative sizes also preclude what is known as the bucking in the flame from an over supply of fuel being forced into the generating coil 16.

To properly carry out the conception of this invention, a mixing chamber 21 must be provided to be positioned above draft openings 9 and around jet 10 which has its base joining the arcuate sides of draft openings 9 and continuing therewith to a point where the arcuate sides of the openings end. At that point the mixing chamber forms draft arches 22 which bridge the space between said draft openings. These draft arches are two in number and are positioned diametrically opposite each other as shown in Fig 1, to form, together with openings 9, a complete draft inlet for air which is to be mixed with the gas issuing from jet 10. Mixing chamber 21 is tapered inwardly toward the top asshown in Fig. 2 and the same tends to force the air drawn in through openings 9 and 22 into the gas. As is shown, the jet 10 is positioned at nearly the top of the draft arch 22 which causes the air to be drawn in instead of being forced out. The tapered form of the mixing chamber not only allows air to pass upwardly around the stream of gas issuing from jet 10 but acts in the capacity of a guide to direct the upward flowing air toward the stream of hot gas to cause a thorough mixture. Obviously the air as it passes up through mixing chamber 21, is heated and does not cool the gas enough to cause the same to be converted into oil again. Combustion takes place approximately on a line with the top of mixing chamber 21 and the flame strilies flame spreader 23 which is hung by any suitable means 24 to coil 16. This flame spreader is not an important feature of the invention, but must be used to guide the flame in the proper direction and also protect, to a certain extent, the coils from coming in direct contact with the flame proper which wouldcause the same to over-heat.

lVith reference at this time to the preferred form of jet as shown in Fig. 4, the same comprises a member 25 having an enlarged passage 26 extending upwardly from its jet 10 which should be low. enough to permit the gas to reach a substantial distance above the jet before it. is properly mixed with air and burned. The inner walls of opening 26 re roughened considerably to form an agitating surface for the gas. This jet will never carbonize.

Operation In generating the oil burner, oil is allowed to flow through pipe 19 to elbow 18 and around to jet 10 through pipes 17, 16, 15, 1d, 13 and 12 where it flows to the flash pan formed by floor 6 and flanges 7 through a groove 27 leading from jet 10. l Vhen the supply of oil is cut oil, coil 16 will clear itself of oil through its peculiar consnuction and only a small amount of oil will remain in pipe 17. Gil in the flash pan is now ignited by using a wick if necessary and the coil 16 is heated in the shortest possible time due to the fact that it is entirely dry and no oil is contained therein to absorb heat. As soon as the coil 16 has been heated sufficiently, the oil is again turned into coil 16 and is converted into gas which immediately passes around to jet 10 where it mixes with air in the mixing chamber 21 and is ignited at a point just above the same as previously described.

From this point on, the heat from the flame will maintain the coil 16 at a temperature high enough to form the oil passing therethrough into a combustible It is not able that the amount of oil consumed by this burner is extremely low for the I'QSUliii; obtained.

It is understood that the burner may be made in many various sizes and that the base may be modified to a different shape if desired, and it is understood that the construction of this invention is limited only by the appended claims and the prior art.

What is claimed is:

1. In a liquid fuel burner, a body formed to provide a base and a floor furnishing a flash pan, said floor having a pair of spaced apartdraft openings adjacent the center thereof, said openings having their oppositely disposed sides arcuate and concentric with a jet supported there-between and carried at the endof a pipe extending upwardly from near one end of said fiooi' to form a coil thereabove, the other end of said pipe passing through said floor near its other end to be joined to a supply pipe and a mixing chamber positioned above said draft openings and around said jet, said chamber joining and conforming to the arcuate sides of said draft openings and having upwardly extending draft arches bridging the space between said draft openings whereby an even supply of air is passed upwardly entirely around the gas issuing from said jet.

as liquid fuel burner comprising in 1 UH", Law

combination, a body formed to provide a base and a floor furnishing a flash pan, said floor having a pair of spaced apart draft openings adjacent the center thereof, said openings having their oppositely disposed sides arcuate and concentric with a jet supported there-between and carried at the end of a pipe which extends beneath said floor and upwardly there-through from near one end thereof to form a coilvthereabove, the other end of said pipe passing through said floor near its other end to be joined to a supply pipe, a mixing chamber positioned above said draft openings and around said jet having draft arches therein, and means for directing the flame carried by said coil, the coil carried above said floor being formed substantially diamond shaped to provide a plurality of obtuse turns there in whereby the even flow of oil is interrupted for the purpose of and substantially as set forth.

3. A liquid fuel burner comprising in combination, a body formed to provide a base and a floor furnishing a flash pan, said floor having a pairof spaced draft openings adjacent the center thereof, a jet supported between said openings and carried at the end of a pipe which extends beneath said floor and thence upwardly from near one end thereof to form a coil there-above, the other end of said pipe passing through said floor near its other end to be joined to a supply pipe, a mixing chamber positioned above said draft openings and around said jet and a flame spreader supported by the coil above said m xing chamber, said coil being provided with a plurality of abrupt turns therein and gradually becoming lower as it leaves the point where oil is first introduced into said coil.

at. In a liquid fuel burner, a body formed to provide a base and a floor furnishing a flash pan, said floor having a pair of spaced apart draft openings adajcent the center thereof, said openings having their oppositely disposed sides arcuate and concentric with a jet supported there-between, a flange extending around said opening and spaced apart from the same, a jet supported r between said openings and a mixing chamber positioned above said draft openings and maintained in said position by the flange there-around, a coil overlying said base having a plurality of oppositely disposed abrupt turns therein and a flame deflector carried by said coil, said mixing chamber being tapered inwardly from the bottom towards the top and having a pair of draft openings therein, said draft openings extending upwardly from the bottom and each having its side walls diverging from each other as the bottom is approached to form openings over-lapping thedraft openings in said base.

5. In a liquid fuel burner, a body formed to provide a base and a floor furnishing aflash pan, spaced apart draft openings adjacent the center of said floor, a diamond shaped coil over-lying said body, a mixing chamber disposed above said draft openings and a jet member carried at the out-let end of said pipe and within said mixing chamber, said diamond shaped coil having a pair of oppositely disposed obtuse angle turns therein and having its entire length gradually and progressively lowered as the point where the oil leaves the coil is approached.

In testimony whereof I hereunto aiiix my signature this 7th day of March, 1925.

JOSEPH CARLISLE. 

